B. were having
Explanation: This sentence describes an action that was happening in the past when another event occurred, so we use the past continuous ("were having").

B. knew
Explanation: "Wishes" is followed by a past tense verb to express a hypothetical or unreal situation, so "knew" is correct.

C. was sleeping
Explanation: This is a past continuous action that was happening at a specific time in the past (when you called her), so we use "was sleeping."

A. didn't make
Explanation: In a wish about a past event, we use the past perfect form (didn't make) to express regret.

B. could
Explanation: After "wishes," we use the past tense (could) to express a wish about an ability in the present or future.